3 replies to this topic

[djdemzy]

Good Evening,

I am currently desiging a heat exchanger to heat Air from 10 oC to 110oC and cool flue gas from 1259.4 oC to 725 oC.

As both fluids are gases, i would like to know if it is advicable to use a shell and tube heat exchanger?

I read online that the convertional gas-to-gas heat exchanger is vertical shell and tube heat exchanger


Thank You Very Much
Kind Regards


Paul

[srfish]

Hello,

This appears to be an air preheater of some kind. It would not be a conventional shell-and-tube. Because of the low heat transfer coefficients on both sides, there needs to be some kind of extended surface.

[Arpit_Jain]

This may help

 Increasing Heat Exchanger Performance.pdf   184.49KB   94 downloads

[Afshin445]

As srfish mentioned your application is air preheater.One of good example is heat recovery excahger in Power industry, when outlet flue gas from boiler used for preheating of air.Take a look
in following link for some kind of this type of exchangers:
http://www.airprehea...?cat=1&subcat=9